engineering

18th-century manuscript map of part of the Lek River
6. H ATTUM, Dirk van. Kaarte en aftekening van het rivier vak beneeden het Tienhovense Veer met de aanleggende krib, en rijswerken.
[Netherlands], August 1792. Manuscript map in pen, ink and colour washes on paper (52.5 × 73.5 cm), with a compass rose (north below right),
the names of the regions, and a scale (ca. 1:2000) below left. € 1950
Large manuscript map of part of the Lek River, near the village of Tienhoven in Zuid-Holland. The map was surveyed and drawn by Dirk van Hattum,
the official surveyor of the water board of the Lekdijk Benedendams. In his map Van Hattum suggests the construction of a hydraulic works to improve the
navigability of part of the river and simultaneously protect an elementary river groyne downstream. Besides the extent, nature and ownership of the lands,
including the remains of former floodgates, much attention is given to the location, structure and improvement of the levee.
With some small tears along old folds and along the edges, and some minor soiling, but still generally in good condition.